// Adriano Santi (contact@adrianosanti.com), September 2005

function validateForm(formObj) { 
var formElements = formObj.elements;

// Now I'll set a bunch of boolean variables that will help us validate your form.
var canSubmit = true; // This will ultimately decide if the form gets submitted or not, and is dependant on the other vars to do so.
var emailValid = true; // This checks if the user's email address is valid (string@string.string).
var fieldsComplete = true; // This checks that all the required text fields are not blank.
var anyChecked = true; // This makes sure all required checkbox/radio box arrays are valid.

// These arrays are used to validate the check/radio boxes.
var rcBoxes = new Array();
rcBoxes[0] = new Array();
rcBoxes[1] = new Array();
var rcArrays = new Array();
rcArrays[0] = new Array;
rcArrays[1] = new Array;

// Getting down to business now, we'll loop through all the elements of your form
for (i=0;i<formElements.length;i++) {
// We'll start with the text fields - making sure all the required ones are not blank.
	if (formElements[i].type == 'text' ||  formElements[i].type == 'textarea') {
		if (formElements[i].name.substring((formElements[i].name.length -4),(formElements[i].name.length)) == '_req' && (formElements[i].value == '' || formElements[i].value == 'undefined')) {
		fieldsComplete = false;
			}
// Now we'll check if the user has provided you with a valid email address...
		if (formElements[i].name == 'email_req') {
			if (formElements[i].value.search('.+@.+\\.[a-z]+') == -1) {
				emailValid = false;
				}
			else { // Removes the highlight if email is valid.

				}
			}
		else if (formElements[i].name.substring((formElements[i].name.length -4),(formElements[i].name.length)) == '_req' && formElements[i].value != '') {
			// Removes the highlight if fields are properly filled.

			}
		}

// Finally, we go through the checkboxes and radio boxes, making sure each array of required check/radio boxes has at least one element checked.
	else if (formElements[i].type == 'radio' || formElements[i].type == 'checkbox') {
		if (formElements[i].name.substring((formElements[i].name.length -4),(formElements[i].name.length)) == '_req') {
			// Adds all checkboxes to an array which we'll be looping through later.
			rcBoxes[0].push(formElements[i].name);
			rcBoxes[1].push(formElements[i].checked);
			}
		}
	}

// After loading all the check/radio boxes into a separate array, we go through them again.
if (rcBoxes[0].length > 0) {
	for (i=0;i<rcBoxes[0].length;i++) {
		// The first thing we'll do is separate them into little arrays where they have a common name attribute.
		targetCheck = formObj[rcBoxes[0][i]];
		i += targetCheck.length;
		// Then we'll loop through that array.
		for (j=0;j<targetCheck.length;j++) {
			if (targetCheck[j].checked) {
				// If we find a checked box within a required array, add the element's name to rcArrays[0] and add true to rcArrays[1].
				rcArrays[1].push(true);
				rcArrays[0].push(targetCheck[j].name);
				// That's all we need, so we can break out of the loop.
				break;
				}
			else if (j == (targetCheck.length -1)) {
				// If nothing is checked, we only add the name of the element to rcArrays[0].
				rcArrays[0].push(targetCheck[j].name);
				}
			}
		}
	// So, with all the info we gathered up there, we'll check the length of rcArrays[0] against rcArrays[1].
	// If all the required check/radio arrays have at least one box checked, they're valid and the lengths should match.
	if (rcArrays[0].length != rcArrays[1].length) {
		// If the lengths of rcArrays[0] and rcArrays[1] don't match, it means something that should've been checked was left unchecked.
		anyChecked = false;
		}
	}

// Remember our boolean vars? This is where we check them and give the user an appropriate response.
if (!fieldsComplete || !anyChecked) {
	// This message will display if a required textfield was left blank or a checkbox was left un-checked.
	alert('Please fill out all required fields before submitting this form.');
	canSubmit = false; // Don't let the form submit.
	}
else if (!emailValid) {
	// This message will display if the user didn't enter a valid email address.
	alert('Please enter a valid email address in the highlighted field.');
	canSubmit = false; // Don't let the form submit.
	}
if (fieldsComplete && emailValid && anyChecked) {
	// If everything has been properly filled and a valid email address has been entered, the form can submit!
	canSubmit = true;
	}
return canSubmit;
}

function restore(id)
{
	document.getElementById(id).innerHTML='<a href=\"mailto:contact[at]aaronsarnat[dot]com\" onclick=\"return noSpam(this.href)\">' + 'Click here to send a message from your default email client.' + '</a>';
}

function btnhover(id)
{
	document.getElementById(id).style.background="#3b3c3b";
}

function btnout(id)
{
	document.getElementById(id).style.background="#313738";
}